MM-36764 mlog refactor (#18118)

Refactor mlog
- simplify mlog by removing redundant code
- remove Zap dependency
- update unit test helpers
- update logging config
- update auditing

cmd/mattermost/commands/logs.go

@@ -1,54 +0,0 @@
-// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
-// See LICENSE.txt for license information.
-
-package commands
-
-import (
-	"io"
-	"os"
-
-	"github.com/spf13/cobra"
-
-	"github.com/mattermost/mattermost-server/v6/shared/mlog/human"
-)
-
-var LogsCmd = &cobra.Command{
-	Use:   "logs",
-	Short: "Display logs in a human-readable format",
-	RunE:  logsCmdF,
-}
-
-func init() {
-	LogsCmd.Flags().Bool("logrus", false, "Use logrus for formatting.")
-	RootCmd.AddCommand(LogsCmd)
-}
-
-func logsCmdF(command *cobra.Command, args []string) error {
-	// check stdin to see if we have a pipe
-	fi, err := os.Stdin.Stat()
-	if err != nil {
-		return err
-	}
-
-	var input io.Reader
-	if fi.Size() == 0 && fi.Mode()&os.ModeNamedPipe == 0 {
-		file, err := os.Open("mattermost.log")
-		if err != nil {
-			return err
-		}
-		defer file.Close()
-		input = file
-	} else {
-		input = os.Stdin
-	}
-	var writer human.LogWriter
-
-	if flag, _ := command.Flags().GetBool("logrus"); flag {
-		writer = human.NewLogrusWriter(os.Stdout)
-	} else {
-		writer = human.NewSimpleWriter(os.Stdout)
-	}
-	human.ProcessLogs(input, writer)
-
-	return nil
-}

cmd/mattermost/commands/main_test.go

@@ -9,7 +9,6 @@ import (
 	"testing"
 
 	"github.com/mattermost/mattermost-server/v6/api4"
-	"github.com/mattermost/mattermost-server/v6/shared/mlog"
 	"github.com/mattermost/mattermost-server/v6/testlib"
 )
 
@@ -28,8 +27,6 @@ func TestMain(m *testing.M) {
 		EnableResources: true,
 	}
 
-	mlog.DisableZap()
-
 	mainHelper = testlib.NewMainHelperWithOptions(&options)
 	defer mainHelper.Close()
 	api4.SetMainHelper(mainHelper)